Device for positioning and forming apertures



Nov. 16, 1943.

W. DZUS WWW/W Wl'fv-NESSES I y DEVICE FOR POSITIONING AND FORMINGAPERTURES Filed June 14, 1941 'INVENTOR Zlam @as BY. 77km 6am? m'ATTORNEYS Patented Nov. 16, 1943 UNlTED STATES PATENT OFFICEl fV2,334,614 Y previosA Foa rosIrIoNrNG AND FoaMxNo APERTURES Y,

Wiuiam nzus, West Islip; N. Y. Application June 14, 1941, SeralNo.398,138r

Col. 'zr-s2) 1 claim.

This invention relates to an Vimproved tool or jig to be used inpositioning, aligning, spotting, or forming apertures or the like.particularly useful in positioning, aligning and forming apertures inconnection with the installation of fastening devices of the type shownin my Patent No. 1,955,740, granted on April 24, 1934. It is an objectof my invention to provide an improved tool or jig, that` may be used inpositioning vor forming one or more apertures in a desired predeterminedrelationship, in material of varying thicknesses, and at an adjustablepr@l determined distance from the edge of lthe mate rial.

, Fig. lis a side elevational View partially in sei.

My. device isV Among other objects is the provision ofanim-` tionshowing a fastening device made in` accordance with my Patent No.1,955,740, holding two sheets of material together;

Fig. 2 is a bottom plan view of the fastening device; Y y

Fig. 3 is a sectional view in the direction of the arrows on the line`3--3 of Fig. 5, showing a tool or jig embodying my invention and whichmay be used for positioning or forming a plurality of apertures of thetype required for the in-y stallation of the spring member of myfastening device; g y

Fig. 4 is a sectional elevationalview of the tool or jig in thedirection of the arrows on theline 4-4 of Fig. 5; l y

Fig. 5 is a side elevational view of the tool or .11g l Fig. 6 is afragmentary plan View of the articles or part to which the spring memberv'of my 4fastening device is to be attached, showing the aper7 tureswhich have been positioned and means of my tool or jig.

My improved tool or jig may be used in forming, positioning and aligningapertures for many different purposes. useful in connection withthe'installation of fasteningdevices of the type shown in my Patent No.1,955,740, and in the accompanying drawing I have illustrated it asbeing used for that purpose.

Thus, in Figs. 1 and 2, I have shownv two articles 0r parts II and I2,illustrated as being held together by av fastening devicel of thischaracter.

However, it is particularlyV rI'he fastening device consists of abuttonor stud;

member I4, securedto the part II', so that it may freely rotate, and aconnector or spring member I5, secured to the part I2. The members I4and I5 are so formed and so disposed that they may be interlocked in themannershown, bysimply turning the stud member I4. The stud member isprovided with an enlarged head I 6, which may be formed with a kerf, asshown, and a tubular shank I'I, formed with oppositely disposed spiralslots I8, each having a shoulder I9 formed near the end thereof toprevent accidental retrograde movement. Immediately beneath the head I6,the stud member is provided with a neck 2i), of smaller diameter thanthe shank, the neck being disposed in an laperture formed inthe part II.To prevent the stud member from accidental re moval from the aperture,and also to permit itto be freelyrotated, I provide a grommet 2|,disposed around theedges of the aperture and projecting inwardlykaroundthe neck of the Ystud member. v 5

|The spring member VI5 is made of aresilient strong material, such asWire, and at opposite ends is formed into coils, in the manner indicatedat 22, the said coiled portions being secured to the article or parts I2in some suitable manner, as by means of the rivets 23, passing throughapertures 24 formed in the part.' Adjacent the central portion ofthespring member I5, I form the part I2, with an aperture 25, ofsuicient di- Y ameter to accommodate the shank I'I of the stud member.

In order to secure the article or part II to the article or part I2, Isuperimpose the part I I upon the part I2, and insert the shank Il ofthe stud member through the aperture 25. Upon the ro`- tation of thestud member in a clockwise direction, as viewed from the top thereof,the central portion of the spring member I5 will be engaged by thespiral slots, and will be drawn upwardly against the tension of thememberjuntil they member passes beyond the shoulder portions I9. Theshoulder portions prevent accidental retrograde rotation of the studmember and the twov articles or parts II and I2 are securely yfastenedtogether. Fastening devices of this character are well known in theindustry, and have manyY different uses as, for instance, for securingthe Cowling and cover Vplates on aircraft in position.

In Figs. 3, 4 and 5; I have shown an improved tool or jig which may beused in positioning, aligning and forming the apertures 24 and 25 in thearticle or part I2. This tool or jig is pro-y vided witha rigid frame]6, which may be `made the apertures are to be formed, and the Thus, they apertures 36 correspond with the apertures 'lilY` and are positionedadjacent the two sides 'of the frame, while the aperture 3I correspondswith the aperture 25, and is positioned adjacent the center of theframe. 'Y

The apertures Sil and 3| may be used as guidesr for drills or punches,for spotting or forming the apertures 24 and 25 at the proper positionsin the -plate I2. However, the apertures 30 and 3I are preferablyinternally threadedv and receive the externally threaded tubular guides32 and 343. The externally threaded tubulai` guides 32 and 33 may beadjusted upwardly and downwardly in accordance with'the variations inthe thickA ness of the material in which the apertures: are to beformed.

In the embodiment illustrated in the accom panying drawing, members v32and 33 takeY the' form of tubular' guides to accommodate drills whichare used in forming the apertures 24 and 25, and the openings extendingthrough the guides should be of the proper diameter to snuglyaccommodate drills of' the proper size.` When the members 32 and 33 arein the form of tubular guides, they are preferably adjusted so as torest upon the upper surface of the part IZ'in-which members may beadjusted by screwing them upwardly or downwardly, as the case may be. YA Y To facilitate turning of the membersl andV 33, and toY aid inapplying the required force when they are in the form of punches, Iprovide the heads of the members with transverse aperftures 34, throughwhich a nail or similar article may be inserted to serve as a lever,cranlr, or handle. It will be seen that the membersl 32 and 33automatically position the' apertures the proper distance apart, and inthe proper relai' tionship with respect to each other, so that thespring member I5 may be riveted at'opposite ends to the apertures 24with the central portion-en` tending across the aperture 25.

' The lower plate 23 is preferably provided'with lapertures 38 and 39 inregistry with the apei tures 30 and 3I, to accommodatethe endsof thedrills or punches, when the apertures' are formed or spotted. f Y

In' order to aid in positioning the apertures'tlie desired distancefromthe edge oi the artie'lej or part I2, I provide the tool or jigY with'anadjust'' abie abutment wall 35, against which the edge of' the plate ormember I2v may restA while the api-ir-l tures are being formed, as shownmost clearly irl Figs. 3 and 5. This abutnieiltA Wall ray be mounted asshown at the end of the adjusting screw 36, which isk rotatablyconnected therewith,-

and whichA extends through andisl threadedl to the rear wall 29 of thedevice. Tofguide-the shift itV viewed from the head thereof, theabutment wall 35 is shifted towards the members 32 and 33 so that theapertures will be formed relatively near to the edge of the part I2. Byrotating the adjusting screw-in the opposite direction, the apertureswill be positioned a greater distance from the edge.

In using my improved tool or jig, I first adjust the iscrew 36 so as toshifttlie abutment wall 35 to the proper position, so that the apertureswill be disposed at the desired distance from the edge of the article orpart I2. The members 32 and 33 are then adjusted to permit the insertionof the part I2, which is inserted so that the edge thereof abuts againstthe abutment wall 35.

Where the members 32 and 33 are used as drill guides', they should beadjusted so that the lower edges thereof engage or are positioned nearthe upper surface of the part I2. The drills are then inserteddownwardly through the guide members 32 and 33, so as toforrn theapertures. In this connection', drills of the proper size should beernployed and the drill guides 32 and 33 should be of the proper size toaccommodate the drills.

Where the'inernbe'rs 32and 33 are in the form of punches, they should'be screwed downwardly so as to spot the part I2V o`r` so as to punchholes therethrough. Where the article or part I2 isA merely spotted, itis thereafter drilled through at the spotted points. Thereafter theVspring member I5 may be applied to the part I2 by means of rivetsextending through the coiled end portions 22 and the apertures 24. Dueto the ing' of the abutment wall, I preferably provide a v pair of guiderods 31, connected to the abutmentwall, and extending rearwardly`I'fliroiigh ape/rj tures formed in the rear wall 29". By rotating meyadjusting screw s, m a clockwise directionasf fact that the apertureshave been properly positioned, with respect to each other by my tool orjig', the central portion 'of the spring member I5 will then 'extendover the aperture 25. It

should be understood that for' installing springl members I5 ofdifferent sizes, the distance be tween the members 32 and 33 may becorrespondingly moved. Also the arrangement of the meinberfs 22 'and 33may be enafiged'wnen hierom or jig is to be' used for other purposes.'

While I have illustrated and Ydescribed specific forms of my invention,it should be understood that modificationsA may be made. Thus, myimproved v tool or jig may be'used for purposes4 other than theinstallation ofV fastening devices of the type illustrated,- andalsc'the relative spacing and" arrangement of the members 32 and 33 may be'tion between the members, one of said members' having`A means includingan aperture extending therethrough and adapted to serve as a guide for atol, an' adjustable abutment Vwall disposed btweenjthe members andshift'abie towards and away from the connectingportion, said connectingportion being formed'with athreaded aperture anda plurality ofunthreaded'apertures eirtending therethrough, guide rods connected tolthe abutment wall and extending through the unthreaded'apertures in theconnecting portion, and a threaded adjusting rod connected to theabutment walland extending vthrough the'thread-i ed aperture in theconnecting' portion whereby.`v

andv

the abutment wall may be adjusted towards sans#

